Incandescent to LED rear lights

The LED's made a nice bright spot, but mostly just in the center of the lenses about 3 inches round.
The 3496 bulbs fill the entire lens area with light due to the design of the lenses and off axis reflection assistance of the internal housing of the light assembly.
The 3496 bulbs that Dan suggested are very much brighter than the original 1157 bulbs by about 140 lumens and draw about an amp less power than the original 1157's. (who woulda thunk?)
End result is brighter brake, tail and turns with less power draw on your electrical reserves.
Also ended up being cheaper by about 12 bucks than the LED's
I'm keeping the 3496 bulbs.

Thanks for all the info and help with bulb selection Dan.

One more thing if you dont mind.
I'm going to make my original backup lights into brake and turns also, by wiring them into the brake/turn circuit only of the outer lights.
(All four on with brakes on, and two at a time for the left and right signals) and only the two outer lights on for tail lights.
Since these backup light sockets are a single pole contact, what bulb should I use in those to match the 3496 bulbs Brake and turn performance?
Also I will of course change both lenses to match the brake, tail, turn lenses.